Cargo trailer



FIG. 1 is a rear elevational view of a cargo trailer showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a top rear and side perspective view thereof; and

FIG. 5 is a front and side perspective view thereof opposite to that shown in FIG. 4. 

The ornamental design for a cargo trailer, as shown. 